Inking apparatus for printing-presses.



INKING APPARATUS FOR PRINTING PRESSES.

APPLIOATIQN IILBD FEB. 11, 1901.

B SHEETS-8HBET 1.

N0 MODEL.

IINVENTOR BY w -m w WITNESSES: WK v wag/19 ATTORNEY PATENTED AUG. 9,1904. I

W. SCOTT. INKING APPARATUS FOR PRINTING PRESSES.

APPLICATION FILED FEB. 11, 1901.

3 SHEETS-SHEET 2 N0 MODEL.

BY Mumm ATTORN EY PA'JTBNTED AUG. 9, 1964.

W. scorn". INKING APPARATUS FOR PRINTING PRBSSES.

APPLICATION FILED FEB. 11, 1901.

SSHBETEr-SHEET 3- N0 MODEL.

WITNESSES:

ATTO R N EY Patented August 9, 1904.

WALTER SCOTT, OF PIJAINFIELD, NEW JERSEY.

INKING APPARATUS FOR PRINTING-PRESSEfiS.

' SPECIFICATION forming part of Letters Patent No. 767,125, dated August9, 1904.

Application filed February 11, 1901. Serial No. 46,926. (No model.)

To all whom it may concern.-

Be it known that I, WALTER Soor'r, acitizen of the United States, and aresident of Plain field, in the county of Union and State of New Jersey,have invented certain new and useful Improvements in Inking Apparatusfor Printing-Presses, of which the following is a specilication.

This invention relates to inking apparatus for printing-presses.

In the application for Letters Patent of the United States executed byme on the 30th day of January, 1901, I showed a ductor-roll adapted tobe operated by a cam on the shaft of a continuouslyrevolvingfountain-roll or by other means. I further showed a means, comprisingtwo levers pivoted at one end, for regulating the length of dwell of theductor-roll against the fountain-roll. In this application I show aninking apparatus similar to that disclosed in Patent No. 626,872,granted to me on the 13th day of June, 1899, in which the fountain rollis given an intermittent but progressive rotary motion, the object ofthe invention set forth in this application being to regulate thequantity of ink supplied to a greater nicety.

In the drawings, Figure 1 is a side elevation of the inking apparatus ofa two-revolution bed-and-cylinder printing-press, similar to thatdisclosed in Patent No. 626,872, above referred to, embodying myinvention. Fig. 2 is a detail view of the fountain and ductor rolls andadjacent means shown in Fig. 1. Fig. 3 is a plan view of Fig. 2. Fig. 4is an end View of the brake shown in Fig. 2. Fig. 5 is a view similar toFig. 2, showing the side scribed, as they are well known in the art andform no part of this invention.

In the framework A is mounted the shaft B, geared to make one revolutionto each complete revolution of the printing-machine. On this shaft isplaced a cam b, which contacts with the lever 5 pivoted at b and havingthe connecting-rod 5*, connecting with the leverarm If, attached to therock-shaft t. On this rock-shaft is mounted, by means of two arms 6 theductor-roll Z), which is caused alternately to contact the fountain-roll(J and the ink-distributing roll I) by the means justde- I scribed, theparts being so timed that the duetor-roll is raised above thereciprocating bed when the latter passes under the same. On therock-shaft F is further placed the contacting arm 6, which by contactingwith the means hereinafter described regulates the length of dwell ofthe ductor-roll against the fountain-roll. Upon the shaft B is placed asecond earn 0, which contacts with the pivoted lever 0 having theconnecting-rod a, attached at its other end to the rock-arm 0*, pivotedin the framework. This rock-arm o carries a toothed segment o adapted tocooperate with the segment 0, mounted loosely on the shaft 0 of thefountain-roll O. The segment 0 carries a pawl 0*, which operates theratchet c. tain-roll shaft and is driven by the pawl c" in onedirection, while the ductor-roll 72 is in corn tact with thefountain-roll and remains stationary while the segment a is returning.By this means the fountain-roll is given an intermittent progressiverotary motion, the said means just described being more fully disclosedin Patent No. 626,872 and need not be further explained here.

Mounted in the framework is the stud E, which carries two levers a and 0pivoted with their ends on same. to rest with its free end on theeccentric cam 0 carried by the segment a, mounted loosely on thefountain-roll shaft. The lever is provided with a contacting portion 0adapted to come in contact with the contacting arm Z) on the rock-shaftcarrying the ductor-roll. The lever c is further adapted to rest on aportion 0" of the lever e, a set-screw (5 pass The ratchet a is fast onthe foun The lever e is adapted ing through c to regulate the distancebetween the two levers, and thereby regulate the position of the portiona with relation to the arm I), by means of which the supply of inktransferred can be regulated to a nicety by increasing or decreasing thelength of dwell of the ductor-roll against the fountain-roll. Ifthelevers e and e and contacting arm 6 were not provided, the ductor-rollwould oscillate between the fountain-roll and the inkdistributing rolland always remain in contact with the said fountain-roll a certainlength of time. With this device, however, the levers e and e are movedup periodically by the cam 0 and the lever 6 engaging with the arm Z)will prevent the ductor-roll from remaining in contact with thefountain-roll the full length of time. Moreover, by adjusting the twolevers e and 6 with relation to each other the period of contact of thesurface 6 with the arm 6 can be regulated, thus getting an additionaladjustment. In the sister application hereinbefore referred to theposition of the levers just described is nearly horizontal. In theconstruction here shown their position is nearly vertical, therebynecessitating the balance a to keep the lever a up against the eccentriccam 0 This might of course be done by means of a spring or by any othersuitable means. To aid the operator in adjusting the two levers withrelation to each other, a graduated scale a may be used, as shown in thedrawings, or any other means which would accomplish the same objectmight be used.

In order to stop the motion of the ductorroll after it leaves theink-distributing roll D and before it comes in contact with thefountain-roll, or vice versa, I provide the brake R, adapted to contactthe portion 1* of the shaft of the ductorroll. The brake R slides in theguides r and is provided with the rounded portion 1' Mounted upon theframework by means of the transverse screw 7" or portion 7 by othermeans is the bushing r provided with the adj Listing-screw 1', carryingthe pivot 0, which is stationary and adapted to carry the lever rprovided with the slightly-raised rounded portions 0 and 0* contact,thereby raising and applying the brake to the shank of the ductor-roll.In order to facilitate the disengagement of the two rounded portions 7:and 1 there are provided the two levers r fastened to the lever 1 andthe portion r of the brake R, which tends to push them apart and also toprevent displacement. The advantage of this form of brake is that owingto the contour of the rounded portions the Wear is very slight, andwhatever wear there is may be compensated for by the adjustingscrew 1*".

It will of course be understood that details of construction may bechanged or supplemental-y devices added, as means for turning As theductor-roll moves the two the fountain-roll by hand, &c., all as fullydescribed and shown in Patent No. 626,872. Furthermore, it is obviousthat the cam 6 might be located on a shaft or stud separate from thefountain-roller shaft, in which case the fountain-roll might have amotion of any kind and the stud or shaft carrying the cam anintermittent progressive rotary motion.

Having thus described my invention, what I claim is 1. In aprinting-press, the combination with afountain-roll, and a ductor-rolladapted to contact with the fountain-roll at intervals, of a cam havingan oscillating motion, means moving with the ductor-roll, and adjustablemeans cooperating therewith located on the framework but operated by thecam, whereby the length of dwell of the ductor-roll against thefountain-roll is regulated.

2. In a printing-press, the combination with a fountain-roll having anintermittent progressive rotary motion, and a ductor-roll adapted tocontact with the fountain-roll at intervals, of a cam having anoscillating motion, means moving with the ductor-roll, and adjustablemeans cooperating therewith located on the framework but operated by thecam, whereby the length of dwell of the duotor-roll against thefountain-roll is regulated.

3. In a printing-press, the combination with a fountain-roll, aductor-roll, and a rock-shaft adapted to vibrate the ductor-roll to andfrom the fountain-roll, of means for imparting an intermittentprogressive rotary motion to the shaft of the fountain-roll, a camcarried by the said means, a lever pivoted at one end adapted to restwith its free end on the cam, a second lever adapted to rest on thefirst lever, means for adjusting the two levers with relation to eachother, and means moving with the ductor-roll for engaging with thesecond lever thereby regulating the time of dwell of the ductor-rollagainst the fountain-roll.

4. In a printing-press, the combination with a fountain-roll, of aductor-roll and a rockshaft adapted to vibrate the ductor-roll to andfrom the fountain-roll, a ratchet-wheel fast on the shaft of thefountain-roll, a gear-segment adapted to receive a back-and-forth motionloosely mounted on the shaft of the fountain-roll, a pawl carried bysaid gear-segment adapted to operate with the ratchet to impart anintermittent progressive rotary motion to the fountain-roll and toreturn without imparting motion to the fo untain-roll, a cam moving withthe said gear-segment, a lever pivoted at one end adapted to rest withits free end on the cam, a second lever adapted to rest with its freeend on the first lever, means for adjusting the two levers with relationto each other, and means moving with the ductor-roll for engaging withthe second lever thereby regulating the time of dwell of the ductor-rollagainst the fountain-roll.

5. In a printing-press, the combination of a fountain-roll, means forimparting an intermittent, progressive, rotary motion to thefountain-roll, a rock-shaft carrying a ductorroll, a contacting armcarried by the rockshaft, a cam moving with the means for impartingmotion to the fountain-roll, a pivoted lever adapted to rest with itsfree end on the cam, a second pivoted lever adapted to rest on a portionof the first lever and terminating in a portion adapted to contact thecontacting arm carried by the rock-shaft thereby regulating the periodor length of time of contact or dwell of the ductor-roll against thefountain-roll, and cooperative means formed between the two leverswhereby the relative position of the second lever with regard to the armon the rock-shaft with which it contacts may be varied.

6. The combination with a brake for arresting the rotation of theductor-roll of two portions, one moving with and as the ductor-roll isvibrated, and the other movably supported on a pivot and adapted tocontact the first portion, and means whereby the vibration of theductor-roll causes the synchronous motion of the two portions to operatethe brake.

7. The combination with a ductor roll, means for rotating and vibratingthe same and a brake for arresting the rotation of said ductor roll, oftwo portions comprising a knuckle-joint, and means loosely connectingthe said portions for actuating the knucklejoint by the vibration of theductor-roll to operate the brake.

8. The combination with a ductor-roll, means for rotating and vibratingthe same and a brake for arresting the rotation of said duetor-roll, oftwo portions moving with and as the ductor-roll is vibrated and theother movably pivoted, and means whereby the vibration of theductor-roll causes a rocking contacting motion of the two portions tooperate the brake.

9. The combination with a ductor -roll, means for rotating and vibratingthe same and a brake for arresting the rotation of said duetor-roll, oftwo parts comprising a joint,

one part of which is carried by a portion mov-' ing with theduetor-roll, the other part of which is adapted to move on a stationarybut adjustable support, and cooperative means formed between the twoparts whereby the vibration of the ductor-roll actuates the joint tooperate the brake.

Signed at New York, in the county of New York and State of New York,this 1st day of February, A. D. 1901.

WALTER SCOTT.

Witnesses:

T. HENRY DEWEY, AXEL V. BEEKEN.

